Avenc del Sot de l'àliga

From the B-124 road (Castellar del Vallès to Sant Llorenç Savall), once past the pont de les Arenes, follow a track to the right (Camí de la Font del Plàtan) and further on take a turn-off, also to the right, which climbs the torrent de Castelló until reaching a junction where the font de Sant Jordi is. Here vehicles must be left and the track followed onwards until leaving the track to Can Cadafalc on the left. A few metres further on, follow a small path to the right that climbs the bed of a stream on the way to les Roques d'Aguilar. On reaching some rocky outcrops, move to the right below them until descending into the torrent. A few metres before arriving we will find the pit on its left. The path, marked with cairns, leads to the pit.